{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["RNA", "cell type", "protein", "cell line", "DNA"], "input": "Furthermore, an antiserum against KBF1 (identical to 50 kDa NF-kappa B protein ) reacted with the p50 of NF-GM2 , indicating that the NF-GM2 polypeptide cannot be immunologically differentiated from the 50 kDa subunit of NF-kappa B ."}
{"RNA": [], "cell type": [], "protein": ["KBF1", "50 kDa NF-kappa B protein", "NF-kappa B", "p50", "NF-GM2", "NF-GM2 polypeptide", "50 kDa subunit"], "cell line": [], "DNA": []}